upgrading synergistic research powercell cable

I purchased a synergistic research powercell, mkIII last year and later synergistic changed the power cord from the precision cord to their new copper tungsten element model. I can upgrade with them to the new cord for $600. Has anyone been able to compare the two cords and whether it is worth the money and effort?
The precision cable allegedly allows more current than copper tungsten. Have not done AB comparison but I'm sticking with precision for now.
Having owned the Powercell 3, my advice is stick with what you have rather than invest $600 more.
I can tell you that the copper tungsten is an awesome power cord but do not have power cell 3.

Try the pc you will find a use for it somewhere in your system for sure.